/* pizza.c -- uses define constants in a pizza contex */
#include <stdio.h>
#define PI 3.14159
int main(void) {
  float area, circum, radius;

  printf("What is the radius of your pizza?\n");
  scanf("%f", &radius);
  area = PI * radius * radius;
  circum = 2.0 * radius * PI;
  printf("Your basic pizza parameters are as folowing:\n");
  printf("circumference = %1.2f, area = %1.2f\n", circum, area);

  return 0;
}